I find it fascinating that web UI design for the Chinese market appears so "cluttered" by SV preferences. I've heard multiple times that usability testing has found this style more effective than the SV style of emphasizing white space.

Does anyone happen to have any such usability test results they'd be willing to share? I don't dispute the results at all; I'm just curious about checking them out. I have a feeling it's more than just "more content on the page is better for usability," and would love to understand better.